It’s a big world out there—so big that it can be daunting to decide what international destinations to visit in the course of a lifetime. From natural wonders to man-made masterpieces, from wildlife to cityscapes, the choices are seemingly endless. Don’t let indecision get you down, or worse, delay the planning of your next trip. We’ve whittled it down to twenty amazing places to see abroad before you die. Pick one or pick them all—you can’t go wrong.